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Dynamic analysis of top-loader washing machine with unbalance mass during dehydration and its validation

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Abstract

Top loader washing machines are composed of an outer tub, inner drum, actuator and suspension with spring and dampers. When the drum rotates at a high speed, clothes are attached to the inner wall of the inner drum and the centrifugal force due to the unbalance mass makes a vibrating motion. In this study, the dynamic model of top loader washing machine was established to analyze the vibrating characteristics of the washing machine due to the unbalance mass effect and the mass effect of the fluid balancer. An integrated model of RecurDyn and Particleworks was made and used to analyze the dynamic behavior of the washing machine. The vibrating amount of the washing machine according to the position of the unbalance mass and its magnitude was analyzed. The accuracy of the dynamic model was verified by comparisons of the analysis results with experiments. By using the modal coordinates for the flexible multibody model, it was noted that the vibration of the top-loader washing machine was due to the deformation of the drum by unbalance masses.

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Acknowledgments

This research was carried out by the LG Electronics grant in 2020.

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Authors and Affiliations

  1. Graduate School of Intelligent Robot Engineering, Pukyong National Univ., Busan, 48513, Korea

    Ji-Su Jeong

  2. School of Mechanical Engineering, Pukyong National Univ., Busan, 48513, Korea

    Jeong-Hyun Sohn & Chan-Jung Kim

  3. H&A VPD Division, LG Electronics, Changwon, 51533, Korea

    Jin-Hong Park

Authors
  1. Ji-Su Jeong
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  2. Jeong-Hyun Sohn
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  3. Chan-Jung Kim
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  4. Jin-Hong Park
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Corresponding author

Correspondence to Jeong-Hyun Sohn.

Additional information

Ji Su Jeong is currently working on his master degree from the School of Intelligent Robot Engineering in the Pukyong National University, Busan, Korea. His research interests include multibody dynamics and robot control.

Chan Jung Kim is an Associate Professor of Department of Mechanical Design Engineering at Pukyong National University, Busan, Korea. His research interest includes mechanical vibrations and NVH issue in transportation systems.

Jeong Hyun Sohn is a Professor of Department of Mechanical Design Engineering at Pukyong National University, Busan, Korea. His research interest includes mechanism design and multibody system dynamics.

Jin Hong Park is a Researcher of washing machine team at LG Electronics, Changwon, Korea. His research interest includes mechanism CAE and multibody system dynamics.

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Jeong, JS., Sohn, JH., Kim, CJ. et al. Dynamic analysis of top-loader washing machine with unbalance mass during dehydration and its validation. J Mech Sci Technol 37, 1675–1684 (2023). https://doi.org/10.1007/s12206-023-0309-9

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  • DOI: https://doi.org/10.1007/s12206-023-0309-9

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